Sofa



FIG. 1 is a front right perspective view of the sofa shown in an upright position;

FIG. 2 is a front left perspective view thereof;

FIG. 3 is a front right perspective view thereof in a fully reclined position;

FIG. 4 is a front left perspective view thereof in the fully reclined position;

FIG. 5 is a front view thereof;

FIG. 6 is a rear view thereof;

FIG. 7 is a top plan view thereof;

FIG. 8 is a bottom plan view thereof;

FIG. 9 is a left side view thereof; and,

FIG. 10 is a right side view thereof.

The dashed lines shown on the article represent topstitching. The dot-dashed lines shown in the drawings are for illustrative purposes only and form no part of the claimed design. 

The ornamental design for a sofa, as shown and described. 